Hinge



L. H. MORIN HINGE Filed Dec. 2l, 194.3l

Patented Oct. 2, 1951 UNITED STATES PATENT OFFICE HINGE Louis H. Morin, Bronx, N. Y.

Application December 21, 1943, Serial No. 515,196

2 Claims.

This invention relates to hinges employing i ing operation, and one of these parts is cast u within the other part. when the latter, as a preformed casting is supported in the die and exposed to the cavity forming the second part.

Thenovel features of the invention will be best understood from the following description l when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed, and in which the separate parts are designated by suitable reference characters in each of the views, and in which:

Fig. 1 is a diagrammatic face view of one of the dies employed in forming a pair of hinge butts showing one method of forming and intercasting said butts.

Fig. 2 is a section on the broken line 2-2 of Fig. 1.

Fig. 3 is a perspective view of a hinge detached by a trimming operation; and

Fig. 4 is a view similar to Fig. 1, showing another adaptation of the invention.

In the construction of hinges of various kinds and classes, or any other two members which might generally be classified as hinges, it is customary to form in the pintle bearings of articles of this kind, apertures for the reception of a pintle pin. It is the purpose of my invention to materially simplify and economize on the production of articles of manufacture of this kind by forming the pintle or pivot portion as an integral part of one butt to enter sockets or apertures in the bearings of the companion butt in hingedly or pivotally coupling the butt parts and in permanently uniting said parts. In addition to simplifying the butt structure, the hinge is improved from the standpoint of eliminating the exposure of the pintle through the end bearings of the butt, which is objectionable in the conventional type of hinges. In illustrating simple adaptations of the invention, the same has been shown as applied to making more or less conventional hinge butts. Figs. 1 and 2 illustrate one method of procedure, and Fig. 4 another method of procedure.

In Figs. 1 and 2 are shown at I II and I I, the two die parts employed for producing the dual die cast body I2 in the impression chamber or cavity I3 formed on the parting line of the die parts, as will clearly appear from a consideration of Fig. 2. The upper part of the cavity I3, as seen in the drawing is adapted to form one butt part I4, which comprises a rectangular plate having spaced countersunk screw apertures I5` therein. At one edge of the plate are spaced pintle bearings I 6 disposed inwardly of side edges of the butt I4. On the completed hinge, the bearings I6 are adapted to be arranged in the spaced recesses I'I formed between the pintle bearings I8 of the butt I9.

The butt I9 is also in the form of a rectangular plate having the pintle bearings I8 at one edge thereof. Countersunk apertures 2U :are also formed in the butt I9 to receive the screws or other fasteners. In forming the butts I4, I9, these butts are simultaneously cast in the cavity I3 by injection of heated casting material from a discharge nozzle 2I through a gate passage 22 into the cavity. In the casting operation the plate portions of the butts I4, I 9 are joined by connecting webs 23 which are severed in the trimming operation. This separates the two butt parts which are cast as a unit, but at the same time, forms pairs of butts I4, I9 that are permanently united and pivotally coupled by reason of the integral pintle pin portions 24 on the butt I9, being cast in the apertures 25 of the bearings I6, or in the bushings 26 arranged in said apertures.

The unit casting I2 is formed on a core pin 2'I supported in the upper portion of the dies and upon which the bushings 26, as inserts, are arranged. 'Ihusafter the cast unit I2 is formed, the dies are separated, and the cast unit is left suspended on the core 21. This core is then moved downwardly to position the butt part I4 of the rst cast unit in an impression 28 at the lower portion of the dies, after which the dies are partially closed, the core pin 21 stripped from the first casting, then returned to its original position, and other inserts 26 arranged on the core pin, and a second cast unit formed. In this last operation, the pintle pin portions 24 :are cast within the bearings I6.

It will appear from a consideration of Fig. 2 of the drawing that the die I I has pin portions 29, which extend across the cavities and 'enter recesses 39 in the die in forming the countersunk apertures I5, 20. The die I I will also have at least one pin 3| in the cavity 28 to engage at least one of the pre-formed countersunk apertures of the butt I4 to retain said butt against displacement when the dies are in the partially closed position and in the operation of stripping the core pin, as above described.

In Fig. 4 of the drawing I have shown another method of forming hinges of the kind under consideration, which consists in forming one butt 32 at one side of a pair of dies 33, and the other butt 34 at the other side thereof, the butts being in spaced relationship to each other, and joined throughftaf gate' 35i so that these'buttsf'aresimul; taneouslyicastin 'theinjectionr offheated casting material from a nozzle 36.

The butt 32 has at one side edge thereof pintli'l bearings 31, similar in all respects to the bearings-y I6, whereas the butt 34 has at one side thereof spaced bearings 38 similar to the bearingsxI5??v Between the bearings 38 are .recesses 39. for re: ceiving the bearings 31, and are thus similar in this respect to the recesses l1. In otherwords,..

while the brief description of Figs. 1 and 2 has been applied -to Fig.` 3, yit will ber understood that thelresulting .hinge formed-by the-method shown in Fig'. 4, will loe the same as the hinge shown'in- Fig. 3; Fromthis standpoint, .further details of constructioneoffthe butts 3'2--3li-will be omitted.

In Fig.l 4afvertical rcorepin Allis employed', and thisA core pin .-in kadditionto extending through the.bearings 31 :also extends to and supportspart or the gate 35; as indicated'at 4i.. The purpose of'this is =toavoidfany-'tendency of severing'the pin-403l fromfthe casta position tothe lowered position where the butt 32 enters the impression formingV the.-v butt Y- 34a After stripping theveore'pin 40 from the/cast unit, comprising thetwofbutts 32, 34, with'the dies -in-ailpartiallyy closed position, the core is .returned to itsv normal-position andthe next successive castunit. is formed,` and in-this operation the pintle portions 52.which join thebearings 39 will .be formed within .the bearings 33, thus pivotally and hingedly uniting` the pre-cast butt 32 with" the cast'b'utt`34; the same as inuniting the butt' MJwith-the butt I9. It will also be noted that the'pin'tle'. portions 42, on each-side of each aper'ture'c'l' bearing 31, is enlarged to an extent greater'th'an the 'size of the aperture. 'I'hisY con.- struction' serves to' restrain movement of the butts relatively' to each other in a direction axially of' theV pintle portions.

Fromthe foregoing; it' will'be understood that in'botlifmethods of procedure, a pair of hinge butts-'are formed in each casting operation, and one butt isfunited'witl'i its pre-cast companion butti In-both cases. in the initial casting operationior when theL rstof'a series of butt units are formed. a` suitable plug; preferably patterned along the linesof the butts ill-32 will be arranged between' the dies andbv making these of sena'ratrefparts split along the line ofthe pintle, they maybe removed andl thereafter the operatio'nwvilll be" continuous. The assembled hinges ma'vbe' cast int units of' predetermined lengthl or they mavfbetr'immed shortly after the cast assemblaffe; to form the independent unit' hinges comprisingthe buttsv I4', IBorthe butts 32, 34.

In both forms of construction, it will' be apparent that the'dieswill have suitable portions, asat43`, ttin'g' in` the recesses Il-39 and around the bearings I6-3T.

In referring to the use of heated casting materials.` itwil1` be understood that the hinge butt parts may bef` formed from suitable metals or metalalloys, or fromY diierent plastic materials. When metals are used, and when it is desired t0,

las

employ the bushings, these bushings may be composed of hard fibrous material, or suitable bearing metals and plastics. Either harder plastics, or metals, or brous materials can be employed.

It will, of course, be apparent that the shape or contour of the attaching plates of the butts may be characterized in any desired manner. Further, the combination of interengaging bearings @may be' modified;l and.;l fact,; the; general structure-of the---pintlefVv or pivot-portion of the butts may be made to suit the type of hinge employed in the hinge coupling desired between two members.

In all instances, however, the last cast portionsineproducing the assembled unit will be the internal Vbearingmporton of the coupling in order to benefit by the shrinkage of this cast portion inf producing the resulting free and yet firm bearing action between the relatively movable members.- In the'present i illustrations; ,thez-inner orilastnastportionfis theepintles lle-Jl?.k Itwill' be4 understood that any fmeans may -be provided forfsupporting the bushingsproper positiongas inserts.' on `thecorepins;Y Slight frictiona-lA eri-.- gagementwith the-'pins Wouldbe suhicient.

Havingl fully-` described i my invention;v what I claimas new and desiref-tofsecure by Letters Patent isa j l. A@ hinge of the-classdescribed`l comprising twov die cast butts -havingi interengagin-g L knuckles atl adjacent edges of said butts, Athe.knuckles-E of Vone butthaving apertures: thereifrrf; while; the

knuckles of.A the second; butt". are solid' said knuckles of theV second-i butt.T beingV joined; by integral pintle portionsV arranged` therebetween and rotatably disposed within; the apertures: of the knucklesiof: the` firstbuttp andieach. knuckle of. each,buttfbeingfsubstantially spaced fromaeach adjacent: knuckle of the other" butt; said; pintle portions -1 oneach side of each apertureY off an apertured knuckle being enlarged. tol restrain movement. of`V saidjrst butt axially of Asaidpintle portions.'`

2. A hinge of the class described comprising twci'die cast buttszhavingiinterengaging. knuckles at adjacent edges of said butts, the knucklesffo one; butt having apertures; therein'` while. the knuckles of the second buttareY joinedby4 pintle portions arranged. therebetween and. rotatably disposed within: the'A apertures of* the knuckles .of the, first;- butt,A and` eachf knuckle` of. each butt being-spacedv from each adjacent knuckle of the other; butt, saidpintle portionsA on each side of eachv aperture of an apertured knuckle being enlarged' to an extent greater than the size of the aperture'to restrain movement of said rst butt. axially of. saidv pintle. portions.

LOUIS H; MORIN..

REFERENCES CITED The'Y following references are of record in the lei of this patent:

UNIFIED STATES;l PATENTS Fuller; May: 2', 1944 

